Bi2Se3 nanosheets hybridized with reduced graphene oxide for enhanced photoelectrochemical activity

In this report, two-dimensional (2D) bismuth selenide (Bi2Se3) nanosheets (NSs) and reduced graphene oxide (rGO) (Bi2Se3/rGO) composites have been prepared via a hydrothermal method. The microstructures and morphology properties of Bi2Se3/rGO composites were analyzed by scanning electron microscopy (SEM) and Raman spectra, indicating a well prepared and high crystalline material. Photoelectrochemical (PEC) tests demonstrate that Bi2Se3/rGO heterojunction exhibits enhanced photocatalytic performance of the pure Bi2Se3, which is about five times higher than Bi2Se3 NSs, which is because rGO acts as a conduction pathway, resulting in efficient separation of photogeneration of electron-hole pairs on the Bi2Se3/rGO composites. The as-prepared composite provides a novel insight in the field of photocatalysis.

Automated summary

The report describes the preparation of Bi2Se3/rGO composites through a hydrothermal method. SEM and Raman spectra were used to analyze the microstructures and morphology properties of the composites, indicating a well-prepared and high crystalline material. PEC tests showed that the Bi2Se3/rGO heterojunction exhibited enhanced photocatalytic performance compared to pure Bi2Se3, with rGO facilitating efficient separation of electron-hole pairs.